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Finding the Fourth Proportional to 31,047.54, 46,571.74 and 8,860.91

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Solution

The fourth proportional to 31,047.54, 46,571.74 and 8,860.91 is: 13,291.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,047.54 : 46,571.74 = 8,860.91 : x
  2. Step 2: Convert to fraction form
    31,047.54/46,571.74 = 8,860.91/x
  3. Step 3: Cross multiply
    31,047.54x = 46,571.74 × 8,860.91
  4. Step 4: Simplify right side
    31,047.54x = 412,667,996.68
  5. Step 5: Solve for x
    x = 412,667,996.68/31,047.54
  6. Step 6: Final answer
    x = 13,291.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.